Question about "ChElementShellANCF_3423.cpp"

[gbu3y4t8]

Hello! Recently, I created a project, and the element type in the application is "ChElementShellANCF_3423.cpp". I created a flat plate in the XZ plane. When a force in the Y direction is applied, the calculation result has a large error. At the same time, I created a flat plate in the XY plane, and when a force in the Z direction is applied, there is basically no error in the calculation. I want to know what causes this situation, and how to improve it so that I can calculate the situation of the flat plate in the XZ plane.